Device for inflating pneumatic tires.



No. 636,308 v Patented Nov. 7, I899.

J. F. WILSON.

DEVICE son mrunma PNEUMATIC TIRES.

(Application filed. Dec. 6, 1898.).

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(No Model.)

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' No. 636,308. V Patented Nov. 7, I899.

- J. F. WILSON.

DEVICE FOR-INFLATING PNEUMATIC TIRES.

(Application filed Dec. 5, 1898.)

(No Model.) 2 Sheets-Shoat 2.

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' UNITED STATES PATENT Fries.

JOHN FAY WILSON, 0F JETMORE, KANSAS.

DEVICE FOR INFLATING PNEUMATIC TIRES.

SPECIFIGAT-IGN forming part of Letters Patent No. 636,308, datedNovember 7, 1899. Application filed December 5, 1898. Serial No.698,259. (No model.)

To all whom it may concern:

Be it known that I, JOHN FAY WILsoN,a citizen of the United States,residing at J etmore, in the county of Hodgeman and State of Kansas,have invented certain new and useful Improvements in Devices forinflating Pneumatic Tires; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, forming a partof this specification.

This invention relates to-improvements in devices for inflatingpneumatic tires, and has for its object to provide a simple, durable,and efficient means. that will act automatically by the dropping of acoin through a slot in the machine and actuating a simple sliding bar.

The invention consists in the general construction and arrangement ofthe several parts to be hereinafter described and claimed.

Referring to the accompanying drawings, Figure 1 is a generalperspective of the apparatus, showing an external view with some of theinterior portions illustrated in dotted lines. Fig. 2 is a verticalsection taken at line so a: of Fig. 1, and Fig. 3 is a perspective viewof the coin-chute and operatingbar by which the mechanism is set inmotion.

Like letters of reference refer to corresponding parts.

A represents the inclosing case and may be made of any suitable materialor structure to provide strength and durability.

B represents an air-chamber preferably sit-.

uated at the bottom forward end of the case, and communicating with itis a suitable airpump 0, adapted to be actuated by an electric motor.The construction and mode of operation of this air-pump and motor are socommon and well known that I do not deem it necessary to enter intodetail therewith. I further desire to have it understood that thisportion of the device forms no part of my invention and may be of anysuitable design and located at any desired position within or withoutthe inclosing case.

As a means of setting in motion the motor (indicated at D in dottedlines) 'I provide the apparatus shown in Fig. 3, which consists of acoin-case E, constructed somewhat in the form of an inverted letter Tand having the coin-chute F leading down through the stem G thereof.Cross-bar H is slotted to receive the sliding bars J K, which are heldwith theirinner ends a sufficient distance apart to permit the coin L todrop therebetween. At the outer end of the bar K there is formed acontact-point M, which is arranged to connect with the opening in theblock N and to make electric connection therewith. The wires 0, (seen inFig. 1,) which lead from the source of power, lead to the block N andcoin-case E through the motor. Thus it will be seen that the motor willbe set in motion by the engagement of the point M and block N, whichcloses the circuit, and likewise stopped by their disengagement.

In order that the person who desires to indate the pneumatic tires ofhis bicycle may regulate the amount of pressure without danger ofbursting them, I arrange the lever P, fulcrumed upon the bar Q, with asliding weight R upon its rear end and its forward end adapted to extendbeneath the bar K, within which the notch S is formed. When the bar K isslid forward to close the circuit, the notchS lies immediately above theforward end of the lever P, into which the said lever is forced by theaction of the weight R upon the opposite side of the fulcrum. It will beseen that while the parts occupy this relation the motor and pump willbe set in operation and will continue to work until the connection isbroken. To regulate this pressure, the pipe T is run from theair-chamber B to a point immediately above the forward end of the lever,where the plunger U is arranged to exert a downward pressure upon thatpoint of the lever in proportion to the air-pressure within the chamber.At the rear end of this lever, immediately above the weight R, is ashaft V, carrying the pinion W, which is arranged to engage with therack S upon the upper surface of the Weight. At the outer end a of theshaft V there are provided a dial 1) and a pointer c. The dial is madestationary with the case and the pointer is secured to the shaft andfurnishes means by which said shaft may be rotated. With thisarrangement it will be observed that by rotating the pointer any desirednumber of de grees the weight R will be caused to move along the lever,thereby increasing or decreasing its advantage over the opposite end, sothat when the pressure within the air-chamber B is sufficient toovercome the weight R the forward end of the lever will be forced downout of engagement with the notch S, whereupon the said bar will bewithdrawn by the action of a spring cl, arranged to break the electriccontact between the point M and block N. At the forward end of the leverP there is also secured a frame 0, having a rightangle cross-section.The vertical portion 9 is made fast to the lever, while the lowerportionfforms a framework for the support of the coin-case E. When theforward end of the lever is elevated and engages with the notch S, itcarries with it the portion 9 of the frame, which separates from theportion f at it immediately beneath the coin, thus allowing the saidcoin to drop into the receptacle 0%.

n 19 represent tubes communicating from the outside with theair-chamber. These tubes are fitted with suitable valves to prevent theescape of air until they are connected with the pneumatic tire or tiresto be infiated.

From the foregoing it will be obvious that in the operation ofmyinvention the tires are connected to the tubes 72 p, the pointer 0adjusted on the dial to the proper position to secure the desiredpressure, the coin dropped through the chute F, and the plunger orsliding bar J forced inward until the notch S and forward end of thelever P engage. The electric contact is then made and the air-pump setin motion, causing the chamber B to be rapidly filled, whence the air isforced through the pipes at and 19 into the tires and also through thetube T to the plunger above the lever. The moment the air-pressure risesto a point slightly greater than the weight R the forward end of thelever is forced downward, disengaging the bar K, which is immediatelywithdrawn to break the electric contact between the point M and block N.

From the foregoing it will be obvious that some slight modifications maybe ,made in the general construction and arrangement of the parts as Ihave herein shown and described them without materially affecting theresults, and I desire to have it understood that although I prefer theform shown equivalent means may be adopted without departing from thespirit and scope of my invention.

Having thus described my invention, what I claim is- 1. In apneumatic-tire inflater, the combination of an inclosing case, anair-chamber therein, means to supply air in said chamber, means forconnecting said tires with said chamber, a sliding bar having anelectric contact-point at one end tl1ereof,'a coin-case provided with achute to receive a coin, a block arranged to form electric connectionwith said contact-point, a lever adapted to register with a notch formedin said sliding bar, an adjustable weight mounted upon the opposite endof said lever, and an air-actuating pressure above said lever, andcommunicating With said air-chamber, substantially as described.

2. In a pneumatic-tire inflater, the combination of a case having anair-chamber therein, means for inflating said air chamber, meanscommunicating with said air-chamber adapted to be connected to saidtires, a coincase having a chute therein, sliding bars at the lower endof said case having their inner ends separated a sufficient distance topermit said coins to pass therebetweeu, means whereby the operation ofsaid bars causes said inflating means to be set in motion, a leverprovided with a weight upon one end adapted to slide thereon, and havingits opposite end ar: ranged to engage with one of said sliding bars, andmeans for overcoming the pressure of said weight by the air-pressurefrom said chamber, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN FAY WILSON.

VVituesses:

BYRON L. GLENN, P. H. HAND.

